CVE-2023-3439

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    CVE-2023-3439

    Published: 28 Jun 2023Last Modified: 12 Aug 2026

    Summary:

    Details: A flaw was found in the MCTP protocol in the Linux kernel. The function mctp_unregister() reclaims the device's relevant resource when a netcard detaches. However, a running routine may be unaware of this and cause the use-after-free of the mdev->addrs object, potentially leading to a denial of service.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3439.json, https://nvd.nist.gov/vuln/detail/CVE-2023-3439, https://bugzilla.redhat.com/show_bug.cgi?id=2217915, https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269, http://www.openwall.com/lists/oss-security/2023/07/02/1

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 672c0c5173427e6b3e2a9bbb7be51ceeec78093a
    Fixed -None

    Affected versions

    Fixed in kernel 5.18-rc5

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-3439 | CVE-DB